From fc2527fb024abf92719952c939d751739455bd6b Mon Sep 17 00:00:00 2001 From: =?utf8?q?C=C3=A9dric=20Le=20Goater?= Date: Tue, 7 Jan 2020 18:18:09 +0100 Subject: [PATCH] ppc/pnv: fix check on return value of blk_getlength() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit blk_getlength() returns an int64_t but the result is stored in a uint32_t. Errors (negative values) won't be caught by the check in pnv_pnor_realize() and blk_blockalign() will allocate a very large buffer in such cases. Fixes Coverity issue CID 1412226. Signed-off-by: Cédric Le Goater Message-Id: <20200107171809.15556-3-clg@kaod.org> Reviewed-by: Greg Kurz Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: David Gibson --- hw/ppc/pnv_pnor.c | 2 +- include/hw/ppc/pnv_pnor.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/ppc/pnv_pnor.c b/hw/ppc/pnv_pnor.c index 0e86ae2fea..b061106d1c 100644 --- a/hw/ppc/pnv_pnor.c +++ b/hw/ppc/pnv_pnor.c @@ -111,7 +111,7 @@ static void pnv_pnor_realize(DeviceState *dev, Error **errp) } static Property pnv_pnor_properties[] = { - DEFINE_PROP_UINT32("size", PnvPnor, size, 128 << 20), + DEFINE_PROP_INT64("size", PnvPnor, size, 128 << 20), DEFINE_PROP_DRIVE("drive", PnvPnor, blk), DEFINE_PROP_END_OF_LIST(), }; diff --git a/include/hw/ppc/pnv_pnor.h b/include/hw/ppc/pnv_pnor.h index c3dd28643c..4f96abdfb4 100644 --- a/include/hw/ppc/pnv_pnor.h +++ b/include/hw/ppc/pnv_pnor.h @@ -23,7 +23,7 @@ typedef struct PnvPnor { BlockBackend *blk; uint8_t *storage; - uint32_t size; + int64_t size; MemoryRegion mmio; } PnvPnor; -- 2.39.2